scholarly journals Mixed Ligand Complexes of Al(III) with Chelating Organic Acids and Ethylenediamine

2020 ◽  
Vol 36 (6) ◽  
pp. 1225-1228
Author(s):  
Ratnesh Kumar Singh ◽  
Anju Kumari Gupta ◽  
Sachin Prakash ◽  
D. Prakash
Keyword(s):  
Nitrogen Atom ◽  
Organic Acids ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Nitrobenzoic Acid ◽  
Elemental Analyses ◽  
Aluminium Metal

Mixed ligand complexes of Al(III) with o-Nitrophenol, 1-Nitroso-2-naphthol, 2,4-Dinitrophenol, 8-Hydroxyquinoline, 2,4,6-Trinitrophenol or o-Nitrobenzoic acid and Ethylenediamine were prepared and studied by elemental analyses, conductometric measurements, FTIR and UV-Vis measurements. These studies indicates the coordination of aluminium metal with o-Nitrophenol, 1-Nitroso-2-naphthol, 2,4-Dinitrophenol, 8-Hydroxyquinoline, 2,4,6-Trinitrophenol or o-Nitrobenzoic acid through oxygen or/and nitrogen atom and with Ethylenediamine through nitrogen atom.

scholarly journals Palladium(II) and platinum(II) mixed ligand complexes of metronidazole and saccharinate or benzisothiazolinonate ligands, synthesis and spectroscopic investigation

2019 ◽  
Vol 24 (6) ◽  
pp. 26 ◽  
Author(s):  
Ali A. K. Al-Jibori1 ◽  
Subhi A. M. Al-Jibori1 ◽  
Ahmed S. M. Al-Janabi2
Keyword(s):  
Nitrogen Atom ◽  
Palladium Complex ◽  
Platinum Complexes ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
High Yield ◽  
Conductivity Measurements ◽  
Endocyclic Nitrogen Atom ◽  
Square Planar ◽  
Square Planar Complexes

Six palladium (II) and platinum (II) mixed ligand complexes of metronidazole (mnz) and saccharinate (sac) or benzothiazolinolate (bit) complexes of the type [ML2(mnz)2], M = Pd or Pt, L = sac or bit, have been prepared in moderate to high yield. The newly prepared complexes have been characterized by elemental (C,H,N,S) analysis, conductivity measurements, infrared and 1H-NMR spectra. Characterization data showed that the mnz ligand in all of the prepared complexes is coordinated to metal center through the imidazole nitrogen atom. The (sac) anion ligand is coordinated through the endocyclic nitrogen atom, while the (bit) anion ligand is coordinated through the nitrogen atom in the palladium complex and through the oxygen atom of the carbonyl group in the platinum complexes. The geometry of the Pd (II) and Pt (II) complexes is square planar complexes.   http://dx.doi.org/10.25130/tjps.24.2019.105

scholarly journals Mixed Ligand Complexes of Hg-tetrazole-thiolate with phosphine, Synthesis and spectroscopic studies.

2019 ◽  
Vol 24 (5) ◽  
pp. 10 ◽  
Author(s):  
Osama'a A. Y. Al-Samrai ◽  
Ahmed S. M. Al-Janabi2 ◽  
Eman A. Othman1
Keyword(s):  
Sulfur Atom ◽  
Thiol Group ◽  
Spectroscopic Studies ◽  
Ethanol Solution ◽  
Molar Conductivity ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Diphosphine Ligands ◽  
Tetrahedral Geometry ◽  
Elemental Analyses

Seven new complexes [Hg(k1-ptt)2](1), [Hg(k1-ptt)2(dppm)](2), [Hg(k1-ptt)2(dppe)](3), [Hg(k1-ptt)2(dppp)](4), [Hg(k1-ptt)2(dppb)](5), [Hg(k1-ptt)2(dppf)] (6), and [Hg(k1-ptt)2(PPh3)2] (7) have been synthesized and characterized. The reaction of two moles equivalent of 1-Phenyl-1H-tetrazole-5-thiol (Hptt) with one mole equivalent of  Hg(oAc)2.xH2O in ethanol solution afford [Hg(k1-ptt)2] (1). Treatment of (1) with one mole equivalent of diphos (diphos : dppm, dppe, dppp, dppb, dppf) or two moles equivalent of PPh3 afforded a complexes of the types [Hg(k1-ptt)2(diphos)] (2-6) or [Hg(k1-ptt)2(PPh3)2] (7). The prepared complexes have been characterized by CHNS elemental analyses, molar conductivity, IR and NMR (1H, 13C and 31P) spectroscopy. In all complexes, the ptt- ligand is bonded through the sulfur atom of deprotonated thiol group, whereas the diphosphine ligands bonded as bidentate chelating and PPh3 bonded as a monodentate, to afford a tetrahedral geometry around the Hg+2 ion.   http://dx.doi.org/10.25130/tjps.24.2019.083

scholarly journals Synthesis, structural elucidation and electrochemical behavior of some oxime-phenylalanine mixed ligand complexes

2021 ◽  
Vol 34 (3) ◽  
pp. 543-556
Author(s):  
U. T. Öztoprak ◽  
S. P. Özkorucuklu ◽  
G. Y. Baştemur ◽  
M. E. Tunçmen ◽  
F. Karipcin
Keyword(s):  
Cyclic Voltammetry ◽  
Supporting Electrolyte ◽  
Carbonyl Oxygen ◽  
Molar Conductance ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Molar Ratio ◽  
Gravimetric Analysis ◽  
Geometrical Structures ◽  
Elemental Analyses

Four new mixed ligand complexes Me(II)/phenylalanine (phe)/HL [HL =4-(4-bromophenyl- aminoisonitrosoacetyl)biphenyl and Me = Co, Ni, Cu, Zn] were synthesized. These complexes are formulated as: [CoL(phe)(H2O)2], [NiL(phe)(H2O)2], [CuL(phe)(H2O)2] and [ZnL(phe)(H2O)2]. All the compounds were characterized by elemental analyses, FT-IR, magnetic susceptibility measurements, TG/DTA and cyclic voltammetry (CV) experiments. IR spectral data confirmed the coordination of the oxime ligand to the metal ions through the oxime and carbonyl oxygen. The geometrical structures of the complexes have been found to be octahedral. The measured molar conductance values of the complexes in DMF are in agreement with the non-electrolytic nature ofthe complexes. The elemental analyses confirm a 1:1:1 [metal:HL:L(phenylalanine)] molar ratio. Thermal behavior of the compound was investigated by thermal gravimetric analysis (TG) and differential thermal analysis (DTA) techniques. All the complexes were transformed into metal oxides after thermal degradation. The electrochemical properties of both ligand and their complexes were analyzed by cyclic voltammetry (CV) using glassy carbon electrode in DMF solution containing 0.1 M TBAP as supporting electrolyte.                     KEY WORDS: Oxime, electrochemical characterization, mixed ligand complexes, amino acid, phenylalanine   Bull. Chem. Soc. Ethiop. 2020, 34(3), 543-556. DOI: https://dx.doi.org/10.4314/bcse.v34i3.10

Synthesis and Spectroscopic, Thermal and Electrochemical Studies of Mixed-ligand Complexes of Silver(I) with Derivatives of Benzoyltrifluoroacetonate and 4,4ʹ-Bipyridine, Including the Crystal Structure of [Ag(4,4ʹ-bpy)(tfcpb)]n

2012 ◽  
Vol 67 (5) ◽  
pp. 465-472 ◽  
Author(s):  
Farzin Marandi ◽  
Afsaneh Marandi ◽  
Ingo Pantenburg ◽  
Gerd Meyer
Keyword(s):  
Crystal Structure ◽  
Nmr Spectroscopy ◽  
Weak Interactions ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Electrochemical Studies ◽  
One Dimensional ◽  
H Nmr ◽  
Elemental Analyses ◽  
Derivatives Of

Three new mixed-ligand complexes of silver(I) with 4,4ʹ-bipyridine and derivates of benzoyltrifluoroacetone (Htfpb: 4,4,4-trifluoro-1-phenyl-1,3-butandione, Htfcpb: 4,4,4-trifluoro-1-(4- chlorophenyl)-1,3-butandione and Htfmpb: 4,4,4-trifluoro-1-(4-methoxyphenyl)-1,3-butandione) were synthesized and characterized by elemental analyses and 1H NMR spectroscopy. Thermal and electrochemical properties were also studied. The single-crystal structure of [Ag(4,4ʹ-bpy)(tfcpb)]n shows a one-dimensional coordination polymer as a result of 4,4ʹ-bpy bridging. The four-coordinate Ag(I) ions are linked into double chains by Ag...O contacts, which are extended into a 3D supramolecular structure through abundant weak interactions, such as μ...μ, C-H...F, C-H...O, C-H...Cl and F...F contacts.

On Nonequivalence of Rare-Earth Ion Positions in Mixed-Ligand Complexes with Acetylacetone and Unsaturated Organic Acids

2004 ◽  
Vol 45 (1) ◽  
pp. 167-168 ◽  
Author(s):  
V. T. Panyushkin ◽  
A. A. Mastakov ◽  
N. N. Bukov ◽  
A. A. Nikolaenko ◽  
M. E. Sokolov
Keyword(s):  
Rare Earth ◽  
Organic Acids ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Rare Earth Ion

scholarly journals Synthesis and Study of Mixed Ligand-Metal Complexes of 1, 3, 7-Trimethylxanthine and 1, 3-Dimethyl-7H-purine-2, 6-dione with Some Other Ligands

2011 ◽  
Vol 8 (1) ◽  
pp. 153-158 ◽  
Author(s):  
Shayma A. Shaker
Keyword(s):  
Magnetic Susceptibility ◽  
Infrared Spectroscopy ◽  
Nitrogen Atom ◽  
Oxygen Atom ◽  
Metal Ions ◽  
Metal Complexes ◽  
Mixed Ligand ◽  
Thiocyanate Ion ◽  
Elemental Analyses ◽  
Uv Visible

This work presents synthesis and study of a new mixed ligand metal complexes of 1,3,7-trimethylxanthine and 1,3-dimethyl-7H-purine-2,6-dione with some other ligands like SCN and OCN ions to give the general formula [M(Tx)2(Tp) )2XY] where M=Co(II), Ni(II), Cu(II), Zn(II) and Cd(II), Tx=1,3,7-trimethylxanthine, Tp= 1,3-dimethyl-7H-purine-2,6-dione, X= SCN and Y= OCN. The resulting products were found to be solid which have been characterized using UV-Visible and infrared spectroscopy. Elemental analyses were performed using C, H, N analysis and atomic absorption techniques. The magnetic susceptibility and the conductivity were also measured. The present results suggest that the 1,3,7-trimethylxanthine and 1,3-dimethyl-7H-purine-2,6-dione were coordinated with metal ions through the nitrogen atom. Thiocyanate ion was coordinated with metal ions through the sulfur atom and the cyanate ion was coordinated with metal ions through the oxygen atom.

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